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at the condensation end is 38.6 °C. When the input heat power rises to 5 W, the temperature rising speed is increased, and the time to reach the balance is about 48 min. The highest temperature... sink is tested under the input power of 3 W and 5 W respectively. Under the input power of 3 W, the balance temperature of the metal solid heat sink is up to 68.2 °C, as shown in Figure 12(a). When......
shows that the coefficient of performance of the system reaches 3.63 in summer and 3.49 in winter, respectively. The heat balance in underground rock mass is acquired basically throughout the year... and extract the heat from the source in winter for supply heat for end user. If the heat balance of discharging and extracting could not be achieved throughout the year, the temperature of ground......
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reduction cell surface and surroundings[J]. The Chinese Journal of Nonferrous Metals, 2015, 25(2): 515-522. [2] 龙凤翔. 铝电解槽热平衡控制技术的开发[J]. 轻金属, 2002(10): 44-45. LONG Feng-xiang. Development of heat balance..., China) Abstract: Keeping good heat balance in the aluminum reduction cell can decrease the energy consumption in the process of aluminum electrolysis, but the feeding can destroy the heat balance......
for a large-scale GSHP system, and the hydraulic balance of the pipes group needs to be concerned specially in safeguarding better reliability.Key words:ground source heat pump; monitoring; operation...Monitoring actual performance of ground source heat pump system using GPRS-based data transmission: A case analysis in TangshanDU Hong-pu(杜红普)1, KONG Xiang-fei(孔祥飞)1, LI Min(李敏)2, QI Cheng-ying(齐承英)1......
高炉喷吹焦炉煤气热平衡规律研究李昊堃1,刘克明1,沙永志1(1.北京市钢铁研究总院炼铁室)摘 要:在物料平衡和热量平衡的基础上,以大型高炉生产数据为支撑,建立了高炉喷吹焦炉煤气的数学模型.通过理论计算,分析了理论燃烧温度,炉腹煤气量,炉腹煤气成分及炉缸区总热量与焦炉煤气喷吹量之间的关系,为综合评价新工艺的可行性提供依据. 关键词:高炉； 喷吹； 焦炉煤气； 热平衡......
. 2 Experimental Heat balance of a 50 t aluminum holding furnace operating on reference operation condition (ROC) was investigated experimentally. Here, a brief introduction of the experimental study was given. The furnace body was treated as the objective during heat balance test. Throughout the whole operation period, i.e., from aluminum feeding to product pouring, parameters including temperature......
宝钢高炉热风炉平衡计算与分析关志刚1,金永龙1,李军2(1.辽宁省鞍山市辽宁科技大学材料科学与工程学院2.宝山钢铁股份有限公司 宝钢分公司,上海 200941)摘 要:在热平衡计算的基础上,对宝钢一,四高炉热风炉进行了平衡分析.结果表明,宝钢一,四高炉热风炉效率远低于热效率,且一高炉热风炉全系统效率比四高炉热风炉低6.54%.两座高炉热风炉损失主要为燃烧过程不可逆损失,烟气带出的物理损失,热交换不可逆损失和化学不完全燃烧损失.宝钢热风炉节能的主要途径是:采用合理的空气过剩系数或富氧燃烧,降低烟气温度,提高冷风入......
Microstructure evolution of semi-solid Mg-14Al-0.5Mn alloys during isothermal heat treatment ZHANG Liang(张 亮), CAO Zhan-yi(曹占义), LIU Yong-bing(刘勇兵) Key Laboratory of Automobile... that exhibits a wide solidification range and sufficient fluidity for semi-solid forming was designed. And the microstructure evolution of semi-solid Mg-14Al-0.5Mn alloy during isothermal heat treatment......
was calculated by means of heat balance method, Beck’s non-linear estimation method and optimization-based finite element simulation. The results show an average error of 3.7% for Beck’s non-linear estimation method, 7.5% for heat balance method, and 10.3% for finite element simulation. The positive effect of martensitic transformation on interfacial heat transfer coefficient is obtained......
